JPS6122005A - Oil-in-water emulsion type cosmetic - Google Patents

Abstract

PURPOSE:The titled stable cosmetic, having high safety with excellent favorability in use, composed of both a composition containing a cationic cellulosic polymer, polyhydric alcohol and an oil phase component and an aqueous phase component. CONSTITUTION:An oil-in-water type emulsion cosmetic obtained by incorporating (A) 5-90pts.wt. composition containing (A1) cationic polymer, for example a reaction product of hydroxyethyl cellulose with glycidyltrimethyl ammoonium chloride, (A2) a polyhydric alcohol such as glycerine and propyrene glycol and (A3) an oil phase component such as a vegetable oil and a hydrocarbon with (B) 95-10pts.wt. aqueous phase component obtained by dissolving an alkali component, a water-soluble high polymer, etc. in water. 0.5-5.0wt% component (A1), 0.5-20wt% component (A2) and 0.5-5.0pts.wt. component (A3) based on 1pts.wt. total amount of the components (A1) are preferably incorporated. After dissolving the component (A1) in the component (A2), the resultant solution is gelatinized with the component (A3), followed by pouring the component (B) thereinto to obtain the aimed cosmetic with more homogeneous and preferably emulsified droplets.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel oil-in-water emulsion cosmetic, and its purpose is to provide an oil-in-water emulsion cosmetic that is highly safe, stable, and has an excellent feeling of use. That is.

Conventionally, in the cosmetics industry, various studies have been conducted regarding emulsification technology, and many emulsifiers have been developed accordingly. However, the mainstream of these was nonionic surfactants containing polyoxyethylene chains and anionic surfactants such as fatty acid soaps, so even though they have excellent emulsifying power, they are by no means highly safe. It was difficult. Therefore, it has been a common research goal of cosmetic engineers to obtain emulsified cosmetics with excellent stability without using these emulsifiers.

Therefore, in view of the above circumstances, the present inventors have conducted intensive research in order to eliminate the lack of safety and obtain an extremely excellent oil-in-water emulsion cosmetic, and as a result, they have arrived at the present invention.

That is, the oil-in-water emulsion cosmetic of the present invention is composed of a composition containing a cationic cellulose polymer, a polyhydric alcohol, and an oil phase component, and an aqueous phase component.

The characteristics of the oil-in-water emulsion cosmetic obtained by the present invention are as follows:
It is highly safe, stable, and easy to use.

The type of cationic cellulose polymer that is an essential component in the present invention is not limited, but commercially available products include 4F, Polymer JR (Hydroxyethyl cellulose and glycidyl trimethyl ammonium Quaternary nitrogen-containing cellulose ether (obtained by reaction with chloride) is typical, and may be used alone or in combination, and the blending amount is 0.1 to 20.
0% by weight, preferably 0.5-5.0% by weight.

The type of polyhydric alcohol is not limited, but
Examples include glycerin, sorbitol, propylene glycol, 1,3-phthylene gelylcol, and the like. These may be used alone or in combination, and the blending amount is (1.1 to 50.0% by weight,
Preferably it is 0.5 to 20.0% by weight.

Note that as the oil phase component, those commonly used in the fields of cosmetics, pharmaceuticals, foods, etc. and that are considered safe for the human body can be used. For example, vegetable oils such as olive oil and castor oil, waxes such as beeswax, lanolin, candelilla wax, and wood wax, hydrocarbons such as liquid halafine, squalane, petrolatum, and paraffin wax, higher alcohols such as cetyl alcohol and stearyl alcohol, and others. Examples include ester oil and silicone oil. In addition, the amount of the oil phase component is 0.2 to 10 parts by weight of the mixture of cationic cellulose polymer and polyhydric alcohol.
Parts by weight, preferably 0.5 to 5.0 parts by weight.

Next, the aqueous phase components include those normally used when preparing oil-in-water emulsion cosmetics, such as alkaline components such as sodium hydroxide IIL-fulginine, and water-soluble components such as carboxyvinyl polymer and methylcellulose. A solution of a polymer or the like in water is used, and can be blended in an amount of 85 to 10 parts by weight per 5 to 90 parts by weight of a composition containing a cationic cellulose polymer, polyhydric alcohol, and oil phase component.

Furthermore, in the oil-in-water emulsified cosmetic composition of the present invention, it is also possible to use a cationic cellulose polymer in combination with other emulsifiers.

Regarding the manufacturing method for preparing the oil-in-water emulsified cosmetic composition in the present invention, an aqueous phase component may be added to a composition containing a cationic cellulose polymer, a polyhydric alcohol, and an oil phase component. By heating and dissolving a cellulose polymer in a polyhydric alcohol, adding an oil phase component to form a gel, and then injecting an aqueous phase component into this, an oil-in-water emulsion cosmetic having more uniform and good emulsified droplets can be obtained.

Next, the present invention will be further explained by giving examples.

These are not intended to limit the invention.

Example [1] Emulsion (formulation) Weight % (11 Polymer JR (Product name: Union Carbide Corporation acid) 2.0 (Normal glycerin 1000 (3
) Liquid paraffin 10.0 (low methyl paraoxybenzoate 0.05 (51 fragrance)
0.1 (Add scented ice to make 100%.

(Manufacturing method) Mix A, (11, (2)) and heat and dissolve.

B. Add heated (3) to A to gel.

Mix C1(4) and (61) with heat, add this to B, and emulsify.

D. Further, (add uniformity and cool it to make a product.

It has been confirmed that the emulsion obtained as described above is highly safe, stable with no change in condition even after being left in constant temperature baths at 40°C and 5°C for 2 months, and has an excellent usability. Ta.

Example [2] Moisture cream (I) (formulation)
Weight% (1 Luoguard G (product name: Nilion ■) 3.0 (2) Glycerin 10.0 (3
)1.3-Butylene glycol 5.0(4)
Liquid paraffin 10.0 (Hardened oil 5.0 (Vaseline)
5.0 (7) Paraffin wax 3.0 (8) Methyl paraoxybenzoate 0.05 (9) Fragrance
0.1 (10) Add purified water 100
%.

(Manufacturing method) A. Mix (1) to (3) and heat and dissolve.

B, Al is heated and melted (4) ~ (Apply force to gel.

C, (8), and (+o) are heated and mixed, and this is added to B to emulsify.

D. Further, (9) is added and cooled to obtain a product.

The oil-in-water type moisture cream (I) obtained as described above is highly safe, and is stable with no change in condition even after being left in thermostats at 40°C and 5°C for 2 months. It was also confirmed that the usability was excellent.

Example [3] Moisture cream (II) (formulation) Weight % (1) Polymer J
l(3,5 (2) Propylene glycol 8.0(3
) Glycerin 3.0 (4) Squalane 25.0 (Tetrahydrogenated oil 5.0 (6) Glycerin monostearate 1.0 (Casetyl alcohol 1.0 (8) Sorbitan sesquioleate 1.0 (9) Paraoxy Methyl benzoate 0.1 (10) Flavoring
0.1 (b) Add purified water to make 100%.

(Manufacturing method) A. Mix (1) to (3) and heat and dissolve.

B. Add heat-dissolved (4) to (8) to A to gel.

C, (91, and (11)) are heated and mixed, and this is added to B to emulsify.

D, further add (lO) and cool to obtain a product.

The oil-in-water type moisture cream (II) obtained as described above is highly safe, and is heated at 40°C and 5°C.
It was confirmed that the product was stable with no change in condition even after being left in each thermostat for two months, and also had an excellent usability.

that's all

Claims (1)

[Claims] (1) An oil-in-water emulsion cosmetic comprising a composition containing a cationic cellulose polymer, a polyhydric alcohol, an oil phase component, and an aqueous phase component.